Gemini offers API access that charges $0.03 per 1,000 tokens for text...

https://wiki-fusion.win/index.php/Gemini_Gems_Setup_-_What_Do_Persona,_Task,_Context,_and_Format_Mean%3F

Gemini offers API access that charges $0.03 per 1,000 tokens for text generation. This pricing makes it affordable to integrate advanced language features into apps without surprise fees